How to Check wich partition contain specific rows in PostgreSQL

SELECT tableoid::pg_catalog.regclass, *

FROM <PARTITION TABLE NAME>   

where <CONDITION>;

Example

SELECT tableoid::pg_catalog.regclass, *

FROM stock.request_pt0_arch   

where reqid in(18844,18809,18803,18789,18785,18780,18777,18774,18770,18723,18718,18716,18714,18709,18799,18788,18779);

tableoid                               |id                   |...       |

-----------------------------------+--------------------+----------+

request_pt0_p275000000 275502238 ...

request_pt0_p275000000 275593692 ...

request_pt0_p275000000 275600912 ...

request_pt0_p275000000 275622054 ...

request_pt0_p275000000 275634260 ...

request_pt0_p275000000 275943272 ...

request_pt0_p275000000 275960450 ...

request_pt0_p275000000 275985060 ...

request_pt0_p275000000 275991404 ...

request_pt0_p275000000 275993172 ...

request_pt0_p275000000 275007162 ...

request_pt0_p275000000 276115536 ...

request_pt0_p275000000 276115820 ...

request_pt0_p275000000 276142062 ...

request_pt0_p275000000 276156628 ...

request_pt0_p275000000 276211042 ...

request_pt0_p275000000 276331982 ...